The project of the first ring consists of a set of specific interventions within existing local distributed around the ring to reorganize equipment requests, improve the operation, administration and maintenance.
Interventions related to the third ring consist in adapting the structure to safety standards. The new amenities, such as bar, toilet, infirmaries will be redeployed inside the towers on the four corners of the ring in anticipation a rearrangement functionally at odds of two walkways along the third ring forums.
